<!doctype html>
<html lang="en-US">
  <head>
    <link href="/assets/index.css" rel="stylesheet" type="text/css" />
    <script crossorigin="anonymous" src="https://unpkg.com/@babel/standalone@7.8.7/babel.min.js"></script>
    <script crossorigin="anonymous" src="https://unpkg.com/react@16.8.6/umd/react.production.min.js"></script>
    <script crossorigin="anonymous" src="https://unpkg.com/react-dom@16.8.6/umd/react-dom.production.min.js"></script>
    <script crossorigin="anonymous" src="/test-harness.js"></script>
    <script crossorigin="anonymous" src="/test-page-object.js"></script>
    <script crossorigin="anonymous" src="/__dist__/webchat-es5.js"></script>
    <script crossorigin="anonymous" src="/__dist__/botframework-webchat-fluent-theme.production.min.js"></script>
  </head>
  <body>
    <main id="webchat"></main>
    <script type="importmap">
      {
        "imports": {
          "@testduet/wait-for": "https://esm.sh/@testduet/wait-for",
          "@testing-library/dom": "https://esm.sh/@testing-library/dom"
        }
      }
    </script>
    <script type="module">
      import { waitFor } from '@testduet/wait-for';
      import { queryAllByTestId, queryByTestId } from '@testing-library/dom';

      const {
        testHelpers: { createDirectLineEmulator },
        WebChat: { createDirectLine, testIds }
      } = window;

      run(async function () {
        const { directLine, store } = createDirectLineEmulator();

        renderWebChat({ directLine, store }, document.getElementById('webchat'));

        await pageConditions.uiConnected();

        // WHEN: 7 attachments are added.
        for (let index = 0; index < 7; index++) {
          await host.upload(pageElements.uploadButton(), 'empty.zip');

          await waitFor(() =>
            expect(queryAllByTestId(document, testIds.sendBoxAttachmentBarItem)).toHaveLength(index + 1)
          );
        }

        // THEN: Should show scrollbar.
        const sendBoxAttachmentBar = queryByTestId(document, testIds.sendBoxAttachmentBar);

        expect(sendBoxAttachmentBar.scrollTop).toBeGreaterThan(1);

        // THEN: Scrollable should at bottom.
        expect(sendBoxAttachmentBar.scrollHeight - sendBoxAttachmentBar.clientHeight).toBeCloseTo(
          sendBoxAttachmentBar.scrollTop,
          -1
        );

        // THEN: With 7 attachments, the container should be maxed and it should scroll to bottom.
        await host.snapshot('local');
      });
    </script>
  </body>
</html>
